|Rank|Name|Nationality|Time|Notes|
|---|---|---|---|---|
|1|Janelle Atkinson|Jamaica|4:16.89|Q|
|2|-|-|-|Q|
|3|Kaitlin Sandeno|United States|4:18.97|Q|
|4|Julia Stowers|United States|4:19.84|Q|
|5|-|-|-|Q|
|6|-|-|-|Q|
|7|-|-|-|Q|
|8|-|-|-|Q|

Question: how many ranks have no name?
Answer: 5